EP0910875A4 - Ceramic filter with a coplanar shield - Google Patents

Ceramic filter with a coplanar shield

Info

Publication number
EP0910875A4
EP0910875A4 EP97925454A EP97925454A EP0910875A4 EP 0910875 A4 EP0910875 A4 EP 0910875A4 EP 97925454 A EP97925454 A EP 97925454A EP 97925454 A EP97925454 A EP 97925454A EP 0910875 A4 EP0910875 A4 EP 0910875A4
Authority
EP
European Patent Office
Prior art keywords
ceramic filter
coplanar shield
coplanar
shield
ceramic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97925454A
Other languages
German (de)
French (fr)
Other versions
EP0910875A1 (en
EP0910875B1 (en
Inventor
Reddy R Vangala
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CTS Corp
Original Assignee
Motorola Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of EP0910875A1 publication Critical patent/EP0910875A1/en
Publication of EP0910875A4 publication Critical patent/EP0910875A4/en
Application granted granted Critical
Publication of EP0910875B1 publication Critical patent/EP0910875B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/202—Coaxial filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/205—Comb or interdigital filters; Cascaded coaxial cavities
    • H01P1/2056—Comb filters or interdigital filters with metallised resonator holes in a dielectric block
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/04—Coaxial resonators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/10—Dielectric resonators

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
EP97925454A 1996-07-09 1997-05-05 Ceramic filter with a coplanar shield Expired - Lifetime EP0910875B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US677154 1984-12-03
US08/677,154 US5745018A (en) 1996-07-09 1996-07-09 Ceramic filter with a coplanar shield
PCT/US1997/007559 WO1998001918A1 (en) 1996-07-09 1997-05-05 Ceramic filter with a coplanar shield

Publications (3)

Publication Number Publication Date
EP0910875A1 EP0910875A1 (en) 1999-04-28
EP0910875A4 true EP0910875A4 (en) 1999-08-18
EP0910875B1 EP0910875B1 (en) 2002-07-31

Family

ID=24717559

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97925454A Expired - Lifetime EP0910875B1 (en) 1996-07-09 1997-05-05 Ceramic filter with a coplanar shield

Country Status (7)

Country Link
US (1) US5745018A (en)
EP (1) EP0910875B1 (en)
JP (1) JP3935951B2 (en)
KR (1) KR100323013B1 (en)
DE (1) DE69714444T2 (en)
DK (1) DK0910875T3 (en)
WO (1) WO1998001918A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19903855B4 (en) * 1999-02-01 2010-04-15 Epcos Ag antenna Combiner
KR100343778B1 (en) 1999-12-20 2002-07-20 한국전자통신연구원 Microwave filter with a movable shield having align windows
KR20020022498A (en) * 2000-09-20 2002-03-27 송재인 A Dielectric Duplexer
JP2002299907A (en) * 2001-03-29 2002-10-11 Tdk Corp Shield plate and dielectric filter mounted with the same
US6650202B2 (en) 2001-11-03 2003-11-18 Cts Corporation Ceramic RF filter having improved third harmonic response
US6879222B2 (en) 2002-02-14 2005-04-12 Cts Corporation Reduced length metallized ceramic duplexer
JP3809817B2 (en) * 2002-12-19 2006-08-16 株式会社村田製作所 Dielectric filter, dielectric duplexer, and communication device
US7696845B2 (en) 2005-06-23 2010-04-13 Ube Industries, Ltd. Dielectric filter for base station communication equipment
KR100772620B1 (en) * 2006-01-10 2007-11-02 주식회사 앱솔테크 Metal case for electromagnetic fields suppression in monoblock dielectric filter for wireless communication
KR101263222B1 (en) * 2006-10-27 2013-05-10 시티에스 코포레이션 Monoblock rf resonator/filter
CN111342182B (en) * 2020-03-06 2021-05-14 厦门松元电子有限公司 Structural mixed different-wavelength resonant ceramic filter
KR102256022B1 (en) 2020-03-26 2021-05-25 모아컴코리아주식회사 Monoblock Dielectric Filter

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4742562A (en) * 1984-09-27 1988-05-03 Motorola, Inc. Single-block dual-passband ceramic filter useable with a transceiver
JPS62137901A (en) * 1985-12-12 1987-06-20 Murata Mfg Co Ltd Dielectric resonator
US5103197A (en) * 1989-06-09 1992-04-07 Lk-Products Oy Ceramic band-pass filter
JPH0461501A (en) * 1990-06-29 1992-02-27 Kyocera Corp Surface mount type dielectric filter
FI87852C (en) * 1991-04-12 1993-02-25 Lk Products Oy Tunable ceramic filter and method for its tuning
US5218329A (en) * 1992-03-25 1993-06-08 Motorola, Inc. Low profile ceramic filter with self aligning shield
US5278527A (en) * 1992-07-17 1994-01-11 Motorola, Inc. Dielectric filter and shield therefor

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
No further relevant documents disclosed *
See also references of WO9801918A1 *

Also Published As

Publication number Publication date
DE69714444T2 (en) 2003-04-24
EP0910875A1 (en) 1999-04-28
KR100323013B1 (en) 2002-02-09
EP0910875B1 (en) 2002-07-31
WO1998001918A1 (en) 1998-01-15
JP3935951B2 (en) 2007-06-27
KR20000023660A (en) 2000-04-25
DE69714444D1 (en) 2002-09-05
JP2000515336A (en) 2000-11-14
US5745018A (en) 1998-04-28
DK0910875T3 (en) 2002-11-18

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